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Finding the Fourth Proportional to 69,765.38, 96,269.97 and 38,721.44

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Solution

The fourth proportional to 69,765.38, 96,269.97 and 38,721.44 is: 53,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,765.38 : 96,269.97 = 38,721.44 : x
  2. Step 2: Convert to fraction form
    69,765.38/96,269.97 = 38,721.44/x
  3. Step 3: Cross multiply
    69,765.38x = 96,269.97 × 38,721.44
  4. Step 4: Simplify right side
    69,765.38x = 3,727,711,867.16
  5. Step 5: Solve for x
    x = 3,727,711,867.16/69,765.38
  6. Step 6: Final answer
    x = 53,432.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.